What feature of both true mosses and ferns makes it most surprising that they can survive for many generations in dry deserts?
A) flagellated sperm
B) lack of vascular tissues
C) lack of true roots
D) lack of cuticle
A
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Select all of the following that are valid counterarguments to the idea that evolution is "just a theory."
_____ Scientists use the word theory to describe unifying ideas. _____ Evolution is just a collection of facts without a central theme and this is not a theory. _____ Scientific theories are supported by many types of evidence and no empirical data refutes them. _____ Evolution occurred in the past, but it is not occurring in the present, so it cannot be a theory.
The additive model for polygenic inheritance proposes that the genes controlling a trait are all on one
chromosome. Indicate whether the statement is true or false.
As represented in the diagram above, which of the following organisms are carnivores?
A. human and fish only
B. human, fish, and frog only
C. human, fish, frog, and spider only
D. human, fish, frog, spider, and insect only
A group of medications that induce stimulation of the central nervous system are _______________.
Fill in the blank(s) with the appropriate word(s).